Photographic-printing apparatus.



No. 882,571. I PATENTED MAR. 24, 1908.

A. 0. Y. MAGADAM. PHOTOGRAPHIO PRINTING APPARATUS.

APPLICATION FILED JUNE 24. 1907.

UNITED STATES ALBERT C. Y. MACADAM, OF REVERE, MASSACHUSETTS.

PHOTOGRAPHIG-PRINTING APPARATUS.

No. 882,571. Specification of Application filed June 24, 1907.

Patented March 24, 1908.

Serial No. 380,392.

Letters Patent.

To all whom it may concern:

Be it known that I, ALBERT C. MAC- ADAM, a citizen of the United States, residing in Revere, in the county of Suffolk and State of Massachusetts, have invented an Improve ment in Photographic-Printing Apparatus, of which the following description, in connection with the accompanying drawing, is a specification, like letters on the drawing representing like parts.

This invention has for its object the production of a novel photographic printing frame and mask cooperatin therewith, whereby the opening in the mas or mat may be adjusted with relation to the sensitized paper upon which the counterpart of the negative is to be printed, and also whereby the negative of whatever form may headjusted after the mask has been adjusted so that an adjustment of the mask having been. made, it need not be interfered with or displaced during any final adjustments of the negative.

The frame herein shown as of peculiar construction is defined in the claims and so also is the mask or mat. a

Figure 1 represents the face of my improved printing apparatus with a mask and negative or film in o erative position; Fig. 2 is a rear side view 0 the printing apparatus with the back board in place; Fig' 3 1s a lonitudinal section of the parts represented in dig. 1 on the dotted line .rs.

Referring to the drawings, A represents a frame which 1n ay be a piece of board having at two of its edges feet a, This frame has a central opening or space a of a size suiticiently large in its width and breadth to recelve the largest iece of sensitized paper or card 0L that it is esired to print upon. This space is adapted to be closed during the rinting operation by means of a back oard herein shown as made in two parts b, b united by hin es 6, said parts havin stops 11 b, prefera lv one of said parts as having two stops If, h. The stops b and I) contact respectively with the back of the board at the ends of the space, while the stops b b contact with the board at the sides of the space.

Each part of the back board also has a spring C that is connected centrally therewith by a screw 0', the ends of'said s rings engaging suitable cleats or other usual means c 0 to thus lock the back board in position in the frame, The face of the back board is covered with a cloth of some kind, and in practice when the back board is in its wor ring position its face occupies a position in s ibstantial alinement with the face of the ire he so that when the mask and negative or ii. in areput in printing position they may be sustained by the back board.

The mask D shown, comprises preferably several pieces of paper herein shown as two pieces a, 65. These pieces may be united at their edges in any suitable way, as for instance by a binding :1 of'pn-pcr or cloth. Each of these pieces )f paper is provided with an opening. Tin se openings may be made in any part of ti e paper desired that light may pass readily through both openings, one opening beirg preferably a littlc larger than'the other, iS ior instance, opening 2 in the sheet d is a little larger than the opening 3 in the sheet d That a negative or a ilm fmay be held in thehest possible mam er by .this mask, I prefer to provide the sh wt (1 with a piccc of glass (1 or other usual ransparcnt nmtcrinl of su'llicient thickness nmaintain its sur face absolutely smo lll, md I lay this piece of glass or other material pr ferably between the inner side of sheet d and the film, and secure the some thereto ir any usual man nor. With this mask. when the negative is a film, the film nill be laid upon thc upper side of the sheet d with its face down to cover the opcning 3. This none I lav the mask upon the face of the frame with the opening 3 overlying the sensitized paper, and with the back b iard out of the frame I position the mask so as to place the opening 3 of the sheet d in. any desired position, the position being Va riablc according to the particular part of tlle sensitized paper or card upon which it is desired to prii t \vhatv adjustedthe mask I turn into their opt rativc position, as herein shown, the four sprfngs S and place them in the oosition shown ii. Fig. 1 to securely maintnii the mask in its aidjusted position: then I z djust the ncgnti" so that any part of the nerativc that it is dcsircd to print on the sensitized pa c1 or ca d may be exposed to the liglt throng 1 thc 0pm"- ing 3 in the sheet (1.

To adjust the ncgativ' after thc springs referred to have been turned into position to maintain the mask in its adjustcd position, I may, with my thumbs ii the space of the frame not then occupied by tho back board,

not upon the negative thriugh the opening 3 and turn or move the same to bring the picture thereon into exactly the proper position with relation 'to the opening 3, and thereafter I turn the separate set of holding devices shown as springs 10 so that they act upon the outside of the mask in such position that the pressure is passed through the sheet d onto the negative and onto the lower sheet. After this the back board is inserted in the space, preferably the part b of the back board is inserted first and fastened, and then the part b. In this condition it will be understood that the face of the back board and the mask and film practically contact with opposite faces of the sensitized sheet a and the apparatus is so set that the light may strike first the sheet (I of the mask.

The feet are of decided importance for the reason that they guard the springs or holders and prevent them from being displaced or bent when handling the frame. 7

I have illustrated the four springs or de-' vices for holding both the mask and the 1 negative, but my invention is not limited to the use offour su'ch springs, as I might use more or less and yet be able to hold securely the subjects being treated. In case the negative was a piece of glass, then the negative would be sustained upon the face of the board, it being covered preferably with flannel or similar material,-while the mask outside the opening therein would contact 'vdth the negative either at the top or'bottom. In this last plan four of the springs might be used to act upon the glass negative and hold it in its adjusted position, and then the others on the mask to maintain it in its'adjusted position, whereby one or more printings or exposures from the same negative may be made without re-adjustment of either mask or negative. a

I have used the term maskl herein as synonymous with mat, both terms being used by photographers.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. In photographic printing apparatus, a

of sets of holding devices 'mounte frame, and a mask combined with a plurality of setslof holding devices mounte on the face of the frame, one set acting -to hold the mask and the other. set acting to hold the negative, whereby the mask'and negative may be adjusted separately and confined 1n adjusted osition.

2. In p otographic rinting apparatus, a frame, and a mask com ined with a lurality d on the face of the frame, one set acting to hold the mask and the other the negative, whereby the mask and negative may be adjusted -separately and confined in adjusted position,

said frame having feet at its side to guard the holding devices.

3. In hoto raphic printing apparatus, a frame, a back oard having stops to contact with the back of the frame, and a plurality of sets of spring holdin devices pivotally mounted on the front o upon and-maintain in their adjusted positions both a mask and a negative or film.

the frame to act.

4. In photographic printing'apparatus, a

frame, a two-part back board each part provided with stops anda s ring, an a mask having an o ening and a apted to sustain a negative or m, combined with independent means mounted on the faceof the frame to respectively maintain the mask and the negative or film each in their ad'usted position whereby the ne ative or film may be adjusted through the ack of the frame after adjusting the mask and without interfering with the position of the mask. Qt-v,

5. A mask for a photographic printing apparatus, the same comprisim two sheets, each having an opening t rough which may be observed a negative located between said sheets, andin the line of said openings.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ALBERT C. Y. MACADAM.- Witnesses: Gino-W. GREGORY, THOMAS J. DRUMMOND. 

